Watch out though. Women are fickle things. She could say:
"So you don't like my mother?!"
And then silent treatment. To beat them you must think like them.
But the wife will still want to go....
Invite your brother/friend/cousin/neighbour/the postman.
Go. Subtely make your wife know how uncomfortable you are with the idea but show yourself making an effort with her mother. This will earn you majour points.
Use those points towards a new graphics card / sexual favours.
New wife?
Not meant to be taken in an offensive way, but who in their right mind wants to go on a camping holiday when it's going to be ****ing it down constantly with thunder and lightning?
When the weather's decent fair enough... but the mother in law too... I feel for you![]()
If you're really desperate, take some extra strength laxatives the day of the trip and lock yourself in the bathroom.
Pay an assassin to kill your mother in law. She will be too traumatised to want to go away.